From: Chetan Loke <loke.chetan@xxxxxxxxx>
Optimized queuecommand handler's to eliminate double head-room checks.
The checks are moved inside the 1st if-loop otherwise you would end up checking twice when there is
enough head room.
Signed-off-by: Chetan Loke <loke.chetan@xxxxxxxxx>
Reviewed-by: Andrew Vasquez <andrew.vasquez@xxxxxxxxxx>
Reviewed-by: Giridhar Malavali <giridhar.malavali@xxxxxxxxxx>
Signed-off-by: Chad Dupuis <chad.dupuis@xxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_iocb.c | 19 +++++++++----------
1 files changed, 9 insertions(+), 10 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
index eac9509..1ae0d1d 100644
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -385,9 +385,10 @@ qla2x00_start_scsi(srb_t *sp)
else
req->cnt = req->length -
(req->ring_index - cnt);
+ /* If still no head room then bail out */
+ if (req->cnt < (req_cnt + 2))
+ goto queuing_error;
}
- if (req->cnt < (req_cnt + 2))
- goto queuing_error;
/* Build command packet */
req->current_outstanding_cmd = handle;
@@ -1502,9 +1503,9 @@ qla24xx_start_scsi(srb_t *sp)
else
req->cnt = req->length -
(req->ring_index - cnt);
+ if (req->cnt < (req_cnt + 2))
+ goto queuing_error;
}
- if (req->cnt < (req_cnt + 2))
- goto queuing_error;
/* Build command packet. */
req->current_outstanding_cmd = handle;
@@ -1717,11 +1718,10 @@ qla24xx_dif_start_scsi(srb_t *sp)
else
req->cnt = req->length -
(req->ring_index - cnt);
+ if (req->cnt < (req_cnt + 2))
+ goto queuing_error;
}
- if (req->cnt < (req_cnt + 2))
- goto queuing_error;
-
status |= QDSS_GOT_Q_SPACE;
/* Build header part of command packet (excluding the OPCODE). */
@@ -2343,11 +2343,10 @@ sufficient_dsds:
else
req->cnt = req->length -
(req->ring_index - cnt);
+ if (req->cnt < (req_cnt + 2))
+ goto queuing_error;
}
- if (req->cnt < (req_cnt + 2))
- goto queuing_error;
-
ctx = sp->u.scmd.ctx =
mempool_alloc(ha->ctx_mempool, GFP_ATOMIC);
if (!ctx) {
--
1.7.7
--
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